Sitting bones cushion



FIG. 1 is a front perspective view of a sitting bones cushion;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a front side elevational view thereof; and,

FIG. 8 is a rear side elevational view thereof. 

CLAIM The ornamental design for a sitting bones cushion, as shown and described. 